<!DOCTYPE html> 
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="Content-Type" content="text/html"/>
<title>嘉兴智慧教育</title>
<style type="text/css">
.g404 {
    position:absolute;  
    top:50%;            
    left:50%; 
    margin:-188px 0 0 -264px;     
    width:528px;                             
    height:376px;                           
    z-index:99;     
    background: url(image/404.png) no-repeat center; 
    text-align: center;                     
}
.videobut1{
    width: 70px;
    height: 26px;
    line-height: 26px;
    background: #fb6248;
    color: #fff;
    cursor: pointer;
    border: none;
    margin-top: 350px
}
</style>
</head>
<body style="background: #c0c0c0;margin:0px;padding:0px;">
    <div class="g404"><a href="index.html"><input type="submit" class="videobut1" value="返回首页"></a></div>
    
</body>
</html>